Pipe coupling



Sept. 21, 1943. J. CASTELLANO 2,329,876

PIPE COUPLING Filed April 3, 1941 WASTE WATER EXIT PIPE 7'0 TRAP A INVENTOR.

BY M

//W .KKTTQ Patented Sept. 21, 1943 r 'PIPE COUPLING James Castellano, Brooklyn, N. Y.

- Application April 3, 1941, Serial No. 386,617

1 Claim.

My invention relates to pipe couplings and refers particularly to pipe couplings adapted for the coupling of a pipe without threads and a pipe with threads. a

The lead pipe from the waste water exit of hand basins and similar devices has. a smooth unthreaded exterior face, said pipe being usually vertically dependent from said basin.

It is'necessary that this pipe be connected to I a second pipe, which usually carries a trap of considerable weight, and that these two pipes be strongly attached to each other'yas the weight of the lower pipe will have a tendency to pull away from the 'uppersmooth' faced pipe.

It is evident, therefore, that full dependence can not be placed in the efiectiveness of a gasket connection between the pipes as, a connecting means, as a very considerable pressure would have to be maintained betweena gasket carried by a coupling and the smooth face of the pipe, and as the resiliency of a gasket will decrease in time, the weight of the lower pipe would gradually pull it away from the upper pipe, with the resulting liability of'injury to the trap and the other pipe connections. r

The device of my invention overcomes the above mentioned', and other, objectionable fea-;

tures of couplings suggested for 'theaccomplishment of the described purpose, Iv as will be evi-, dent from a consideration-of my specification and accompanying drawing; in which similar parts are designated by similar numerals.

Figure 1 is a side view of one form of a device of my invention, illustrating one means of ap-' plying as a coupling for an exterior smooth faced pipe and an exteriorly threaded pipe.

Figure 2 is a section through the line 2-2 of I Figure 1., V

Figure 3 is a section through the line 33 of Figure 2. Figure 4 is a perspective view of the form my device shown in Figures 1, 2 and 3.

The particular form of the pipe coupling of my invention shown in the accompanying drawing comprises an annular collar comprising the lower internally threaded element; Ill, and the inwardly extended element ll forming the annular shoulder l2. The upper element ll of the collar has a plurality of upwardly extended ears l3, l3, each having an internally threaded opening I4 therein. A set screw I5 is adapted to be threaded within the opening H of each ear l3.

One means of employing the coupling of my invention is shown in Figures 1, 2 and 3.

The upper end of the pipe it, having a smooth H, the upper portion of which is externally threaded. The pipe l1 may be connected to a trap, or to any other suitable device, or may be directly connected to a waste pipe.

In coupling the pipes l5 and ll, the pipe. l6"

is inserted within the collar ill-4| and'is then slipped into the pipe ii. The collar 36 carrying the annular resilient gasket i8, is then moved downwardly and is threaded with the pipe l'l, this threading being continued until the gasket i8 is .forcibly seated between the pipe l6 and the coupling. The set screws l5, l5 are then threaded inwardly until they are abutted forciblyupon the outer face of the pipe 16.

It will thus be seen that if the gasket [8, through use or age will not abut upon the coupling and the pipe it to retain the pipe It within the pipe ll, due to a downward pull of the" latter, due to the weight of a trap or otherwise,

' The separation of the pipes l6 and I! is simple,

consisting in outwardly threading the set screws l5, l5, revolving the coupling to unthread it with the pipe i7, moving the coupling upwardly upon the pipe is, and disengaging the pipes 56 and 11.

It will thus be seen that my invention presents a'coupling by which a smooth faced pipe and a threaded pipe may be fixedly 'attachedto each other, said attachment not. depending solely upon the resiliency, or contact of an employed gasket. a i

I do not limit myself to the particular size, shape, number, arrangement or material of parts as shown and described as these are given solely for the purpose of clearlydescribing my invention.

What I claim is: v

In combination, an upstanding waste-water exit pipe and a lower pipe, said lower pipe having an upstanding leg and a second leg which is inclined to said upstanding leg and which leads to a trap, the bottom end-portion of said upstanding pipe being located within the top endpipe, said coupling being external to said pipes,

pipes and to frictionally grip the outer wall of said upstanding pipe, said coupling having clamping means located above said shoulder and clamping said coupling to said upstanding pipe above said shoulder and above the top edge of 'said packing member, the lower pipe being downby said coupling and said top edge of said up standing pipe and said respective adjacent par-tof said outer wall, to seal the joint between said wardly slidable relative to said upstanding pipe in unison with said coupling under the pressure of the Water in said upstanding pipe when the frictional grip of, said member against said outer 'wall "is sii'fliciently "*vveakened, said clamping means having sufiicient clamping force to maintain said coupling in position independently of said frictional grip.

JAMES CASTELLANO. 

